Number of unique values per feature
Usage
dt_nunique_perfeat(x, excludeNA = FALSE, verbosity = 1L)
Arguments
- x
data.table
- excludeNA
Logical: If TRUE, exclude NA values.
- verbosity
Integer: If > 0, print output to console.
Value
Named integer vector of length NCOL(x) with number of unique values per column/feature, invisibly.